A320 L73 - ASTM A320/A320M-2021

Grade	A320 L73
AISI American Iron and Steel Institute	8740
Corresponding Standard	ASTM A320/A320M-2021 Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
Classification	Alloy Steel

A320 L73 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.38	0.15	0.75	-	-	0.4	0.4	0.2
Maximum Value	0.43	0.35	1	0.035	0.04	0.6	0.7	0.3

A320 L73 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Quenching and Tempering, Minimum Tempering Temperature 593℃	≥860	≥725	≥16	≥50	≤321

A320L73 Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!